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Summary of Contents for Hokkaido HKEI-HCNI 263 G
- Page 1 Cover HOKKAIDO SERVICE MANUAL HKEI-HCNI 263 G HKEI-HCNI 353 G HKEI-HCNI 503 G...
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Page 2: Table Of Contents
Content Content Precaution ............................2 Safety Precaution ..........................2 Warning ..............................2 Function ..............................3 Dimension ............................5 Indoor unit ............................5 Outdoor unit ............................5 Refrigerant cycle diagram .........................7 Operation limits ..........................8 Cooling operation ..........................8 Heating operation ..........................8 Wiring diagram ...........................9 Installation details ..........................11 Wrench torque sheet for installation ....................11 Connecting the cables ........................11... - Page 3 Content Troubleshooting..........................25 10.1 Display board .............................25 10.2 Troubleshooting ..........................25 10.3 Diagnostic chart..........................26 10.4 Resetting phenomenon often occurs during operation..............27 10.5 Operation lamp flashes and Timer lamp off ..................27 10.6 Operation lamp flashes and Timer lamp on ..................27 10.7 Operation lamp off and Timer lamp flashes ..................28 10.8 Operation lamp on and Timer lamp flashes ..................28 10.9...
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Page 4: Precaution
Service manual 1. Precaution 1.1 Safety Precaution To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service unit, be sure to read this service manual at first. 1.2 Warning Installation Do not use a defective or underrated circuit... - Page 5 Service manual the unit is so equipped.) Operational There is risk of physical injury, electric shock, or product failure. Do not expose the skin directly to cool air for long When the product is soaked (flooded or periods of time. (Do not sit in the draft). submerged), contact an Authorized service center.
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Page 6: Function
Service manual 2. Function Indoor unit Operation ON/OFF by remote controller Sensing by room temperature Room temperature sensor. Pipe temperature sensor. Room temperature control Maintain the room temperature in accordance with the setting temperature. Starting temperature control Indoor fan is delayed for 5 sec at the starting. Time Delay Safety control Restarting is for approx. - Page 7 Service manual Outdoor unit Power relay control The unit has 3 mins delay between continuously ON/OFF operations. Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly. Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation.
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Page 8: Dimension
Service manual 3. Dimension 3.1 Indoor unit Dimension Mode 3.2 Outdoor unit Dimension Mode... -
Page 9: Service Manual
Service manual HKEI 263 G HKEI 353 G HKEI 503 G HOKKAIDO HCNI 263 G HCNI 353 G HCNI 503 G Power supply Ph-V-Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz Btu/h 9000 11000 17000 Capacity 2640 3220... -
Page 10: Refrigerant Cycle Diagram
Service manual 4. Refrigerant cycle diagram Cooling only Heat pump mode... -
Page 11: Operation Limits
Service manual 5. Operation limits 5.1 Cooling operation Outdoor unit air temp. DB Indoor air temp. Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage. 5.2 Heating operation Indoor air temp. -
Page 12: Wiring Diagram
Service manual 6. Wiring diagram HKEI-HCNI 263-353-503 G： Indoor： Outdoor：... - Page 13 Service manual...
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Page 14: Installation Details
Service manual 7. Installation details Wrench torque sheet for installation Outside diameter Torque inch Kg.m φ6.35 φ9.52 φ12.7 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade Unit Pipe length and the elevation Max. -
Page 15: Air Purging Of The Piping And Indoor Unit
Service manual Air purging of the piping and indoor unit Required tools: Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector. Note: The air in the indoor unit and in the piping must be purged. If air remains in the refrigeration piping, it will affect the compressor, reduce the cooling capacity, and could lead to a malfunction of unit. -
Page 16: Pumping Down (Re-Installation)
Service manual Pumping down (Re-installation) Procedure Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. Operate the unit for 10 to 15 minutes. -
Page 17: Re-Air Purging (Re-Installation)
Service manual Re-air purging (Re-installation) Procedure: Confirm that both the 2-way and 3-way valves are set to the closed position. Connect the charge set and a charging cylinder to the service port of the 3-way valve. Leave the valve on the charging cylinder closed. Air purging. -
Page 18: Balance Refrigerant Of The 2-Way, 3-Way Valves
Service manual Balance refrigerant of the 2-way, 3-way valves Procedure: Confirm that both the 2-way and 3-way valves are set to the open position. Connect the charge set to the 3-way valve’s service port. Leave the valve on the charge set closed. Connect the charge hose with the push pin to the service port. -
Page 19: Evacuation
Service manual Evacuation Procedure: Connect the vacuum pump to the charge set’s centre hose. Evacuation for approximately one hour. Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less]. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump). -
Page 20: Gas Charging
Service manual Gas charging Procedure: 1. Connect the charge hose to the charging cylinder. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. 2. Purge the air from the charge hose. Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air (be careful of the liquid refrigerant). -
Page 21: Electronic Function
Service manual 8. Electronic function Proper symbols and their meaning TA: Indoor ambient temperature TE: Indoor evaporator temperature TS: Setting temperature through the remote controller : Self-protection amp of compressor, continue three seconds until turns off the compressor. 3sec : Self-protection amp of compressor, continue five minutes until turns off the compressor. 5MIN : Self-protection amp of outdoor fan/indoor fans when they change from higher wind to lower wind. -
Page 22: Fan-Only Mode
Service manual Current down I 3sec Compressor turn off (after 5 second later) I 5min Current up Compressor turn off (after 5 minute later) I fan The outdoor fan turn off (heating) I restore The outdoor fan turn Indoor fan: On low speed (cooling) compressor: On outdoor fan:On... -
Page 23: Dehumidifying Mode
Service manual Anti-freezing control to indoor evaporator at cooling mode ( T: evaporator temp. ) Compressor and outdoor fan on EVAP. temp. down EVAP. temp. up Compressor and outdoor fan off (after 5 mins) Dehumidifying mode 8.6.1 The 4-way valve is off in dehumidifying mode 8.6.2 Compressor and Indoor Fan actions in dehumidifying mode TA-TS... - Page 24 Service manual * This parameter can be changed from 0 to 3 8.7.4 Indoor Fan actions at heating mode Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but Anti-cold wind function prevails. Anti-cold wind control function at heating mode (T=indoor exchanger temp.) Setting fan speed Breeze T temp.
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Page 25: Defrosting Mode(Available For Heating Mode)
Service manual Compressor off Fan off Compressor on Fan off T temp. down T temp. up Compressor on Fan on 8.7.7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time Defrosting mode (available for heating mode) 8.8.1 Defrosting condition: Defrosting starts when either of the following &... -
Page 26: Auto Mode
Service manual Auto mode 8.9.1 The air conditioner automatically selects one of the following operation modes: cooling, heating or fan only according to the temp erature d ifference between room temp erature (TA) and set temp erature (TS) . Heating (fan only at cooling only) Fan only Cooling TA-TS... -
Page 27: Auto Restart Function
Service manual The total time is 7 hours, after 7 hours the unit stops 8.11.3 Heating: The set temperature decrease 1° per hour. Two hours later, the set temperature will maintain as a constant and the air circulation is kept at low speed (Anti-cold function takes preced ence over all). -
Page 28: Model And Parameters
Service manual 9. Model and Parameters HKEI-HCNI503G HKEI-HCNI263G HKEI-HCNI353G Model 16.0A 10.0A 12.0A I3SEC 15.0A 7.5A 8.5A I5MIN 11.5A 7.5A 5.5A IFAN 9.5A 6.5A 4.5A IRESTORE 5.0A 7.5A 3.5A IDEFROST 34° 28° 34° 36° 37° 32° 30° 33° 30° 20° 22°... -
Page 29: Troubleshooting
Service manual 10. Troubleshooting 10.1 Display board Operation The indicator flashes once every second after power is on and illuminates when the air conditioner is in operation. Timer indicator: The indicator illuminates then TIMER is set ON. PRE-DEF. indicator (For cooling & heating mode only) The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating. -
Page 30: Characteristic Of Temperature Sensor
Service manual 11. Characteristic of temperature sensor Temp. Resistance KΩ Temp. Resistance KΩ Temp. Resistance KΩ 62.2756 14.6181 4.3874 58.7079 13.918 4.2126 56.3694 13.2631 4.0459 52.2438 12.6431 3.8867 49.3161 12.0561 3.7348 46.5725 11.5 3.5896 10.9731 3.451 41.5878 10.4736 3.3185 39.8239 3.1918 37.1988 9.5507...
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